Storage shelving unit



FIG. 1 is a perspective view of a storage shelving unit showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view; and,

FIG. 4 is a typical elevational view thereof.

FIG. 4 has been shown on an enlarged scale with respect for FIG. 1. 

The ornamental design for a storage shelving unit, as shown and described. 